Tool for driving corrugated fasteners.



G; S. THOMPSON. TOOL FOR DRIVING CORRUGATED FASTENERS.

I APPLICATION FILED JULY 21, 1913.

1,108,279. Patented Aug. 25, 1914.-

6 6 I Q 9 e 1/? j 22 Mg. 6. 0/ 7 (a INVENTOR ATTORNEYS TH! NORRIS PETERS 50.. PHOTO-LITHO.. WASHINGTON. D, L

UNITED STATES PATENT evince.

CARL S. THOMPSON, OF DALLAS, TEXAS.

TOOL FOR DRIVING CORRUGATED FASTENERS.

To alt whom it may concern Be it known that I, CARL S. Tnoirrson, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Tools for Driving Corrugated Fasteners, of which the following is a specification.

This invention relates to new and tools for driving corrugated fasteners the like.

The object resides in the provision of a tool having a magazine adapted tofeed corrugated fasteners to a driving plunger, thereby providing a tool automatic and fast in action.

Finally the object of the invention is to provide a device of the character described that will be strong, durable, efficient and easy of operation, simple and comparatively inexpensive to construct and also one in which the seve 'al parts will not be lilrelyto get out of working order.

With the above and other objects in view, the invention has relation to certain novel features of construction and operation, an example of which is described in the following specification and illustrated in the accompanying drawing, wherein:

Figure 1 is a plan view of the tool. Fig.

useful and 2 is a side elevation of the tool. Fig. 3 is a plan view with the cover plate removed. Fig. a is a longitudinal sectional view taken upon. the line i g of Fig. Fig. 5 is a front view of the tool. Fig. 6 is a sectional view taken upon the line a.a of Fig. a. Fig. 7 is a partial longitudinal view of the tool, the section being taken upon the line of Fig. 3.

In the drawings the numeral 1 denotes an elongated rectangular body member in which the prime operating parts are mounted. Said member as shown 1s formed with raised ii'itegral side portions 9, which form a channel 3 in which the reciprocatingparts are the fastener into the material worked, while Specification of Letters Patent.

Application filed July 21, 1913.

Patented Aug. 25, 1914.

Serial No. "roasts.

the plunger Sis provided as a feed plunger; The purpose of the plunger 9 is to feed the corrugated fasteners from a source of supply to the driving plunger.

The driving plilnger 5 is shown disposed in the channel of the body member or casing. A. portion 6 of said plunger projects rearwardlyfrom the casing to provide a suitthe drive plunger provides a recess of sufficient depth to receive the feedplunger 9. This plunger rests in contact with the upper face of the driving plunger and is adapted to slide back and forth thereupon as will later be seen. As previously mentioned, it is the purpose of the plunger 9 to feed the fas tenors from a magazine one at a time.

A cover plate 10 is secured to the upper face of the body member, in this instance by a number of screws, and carries fixed on its outer face and forward end, a magazine 11. The magazine is preferably made of sheet metal rectangular in cross section and of a size suflicient to freely receive the fasteners. The magazine is secured to the cover plate by screws and has its side walls extending through an aperture in the cover plate and terminating flush with the under face of the cover plate. .The magazine is filled from the top and is provided with a cover cap 12. To keep the fasteners in closecon tact with the upper face of the feed plunger a coiled spring is disposed in the magazine between the cover cap 12 and the uppermost fastener. The plunger 9 slides reaiavardly far enough to allow a fastener from the magazine to drop into the path of said plunger so that the latter upon its return stroke will carry the fastener to the posh tion shown at A in Figs. 3 and 4:. The cover plate on its forward. end is provided with a boss 15 somewhat thicker than the plate proper. This boss reduces the channel to a depth just sufficient to receive the fastener. To retain the fastener in positive position until driven, a leaf spring 16 is secured in a recess to the under side of the boss 15. I The fastener. upon entering the reduced channel or guide-way is engaged by the spring 16 whereby it is retained in the tool until driven into the work. The

ion to transmit motion from the driving plunger 5 to the feed plunger 9. When the driving plunger is displaced forward to drive the fastener the feed plunger is dis placed rearwardly until past the magazine, at which time the fastener will be carried into the path of the feed plunger and will engage the upper face of the driving plunger. When the feed plunger starts forward the driving plunger will move rearwardly. wardand positioned in front of the driving plunger.

The rear portion of the driving plungerv has a slot of substantial size in which is disposed a compression spring 21 and pin 22. The pin is rigidly fixed in the lower wall of the member 1 and serves to limit the rearward displacement of the plunger. The spring is placed between the pin and wall of the recess to move the plunger 5 rearwardly or to normal position as shown in the drawings.- The end 6 of the plunger is intended to receive the blow of a hammer or a mallet or it may be attached to any form of machine suitable for its operation. The invention is presented as including all such modifications and changes as properly come within the scope of the following limiting the forward movement of the driv- 1 ing plunger.

2. In a staple driving device, the combination of a casing having a longitudinal.

plunger guideway and a staple entrance opening into the guideway, said casing having a staple ejecting opening at one end, a feed plunger reciprocating in the casing guideway across the staple entrance, a driv- The fastener will be carried for ing plunger reciprocating in the guideway of the casing parallel to the feed plunger, said plungers being connected to reciprocate in opposite directions, and a staple holding member disposed in the ejecting opening of the casing out of the path of the feeding plunger.

3. In a staple driving device, the combination of a casing having a staple entrance in one side and a staple ejecting opening at one end, a feed plunger reciprocating in the casing across the staple opening, a driving plunger reciprocating in the casing parallel to the feed plunger, a gearing connection between the plungers for moving the feed plunger in an opposite direction to the driving plunger, and a spring mounted in the casing acting to retract the driving plunger.

' i. In a tool of the character described, a casing, a magazine arranged on the casing, a driving plunger, a feed plungenthefeed plunger adapted to receive corrugated fasteners from the magazine and deliver said fasteners to the guideway of the driving plunger, and means disposed between the plungers for establishing an opposed movable relation therebetween.

' 5. In atool of the character described, a

casing, feed and driving plungers mounted of the driving. plunger, gear racks integral with the two plungers, a pinion interposed between and meshing with the gear racks, establishing a positive opposed movable relation between the said plungers, means for holding the fastener in the path of the driving plunger, and means for returning the parts to normal position.

In testimony whereof Ihave signed my name to this specification in the presence 'of two subscribingwitnesses.

a cam. s. THOMPSON.

Witnesses EARLE C. WIGHT, JACK A. .SCHLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner oilntenta,

. Washington, D. C. 

